function bestlike(selector,colorClass){
			$(selector).on('touchend',function(){
				l_boo=$(this).hasClass(colorClass);
				var x =  $(this).next().text();
				var n = Number(x);
				var b = $(this).next();
				if(!l_boo){
					$(this).addClass(colorClass);
					b.text(n+1);
				}else{
					$(this).removeClass(colorClass);
					b.text(n-1);
				}
			})
		}
		new bestlike('.icon-xin','red');